mirror of
https://github.com/minetest/minetest.git
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127 lines
2.9 KiB
C++
127 lines
2.9 KiB
C++
/*
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Minetest
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Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "script.h"
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#include <cstdarg>
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#include <cstring>
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#include <cstdio>
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#include <cstdlib>
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#include "log.h"
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#include <iostream>
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extern "C" {
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#include <lua.h>
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#include <lualib.h>
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#include <lauxlib.h>
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}
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LuaError::LuaError(lua_State *L, const std::string &s)
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{
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m_s = "LuaError: ";
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m_s += s + "\n";
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m_s += script_get_backtrace(L);
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}
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std::string script_get_backtrace(lua_State *L)
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{
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std::string s;
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lua_getfield(L, LUA_GLOBALSINDEX, "debug");
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if(lua_istable(L, -1)){
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lua_getfield(L, -1, "traceback");
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if(lua_isfunction(L, -1)){
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lua_call(L, 0, 1);
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if(lua_isstring(L, -1)){
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s += lua_tostring(L, -1);
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}
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lua_pop(L, 1);
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}
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else{
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lua_pop(L, 1);
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}
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}
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lua_pop(L, 1);
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return s;
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}
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void script_error(lua_State *L, const char *fmt, ...)
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{
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va_list argp;
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va_start(argp, fmt);
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char buf[10000];
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vsnprintf(buf, 10000, fmt, argp);
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va_end(argp);
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//errorstream<<"SCRIPT ERROR: "<<buf;
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throw LuaError(L, buf);
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}
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int luaErrorHandler(lua_State *L) {
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lua_getfield(L, LUA_GLOBALSINDEX, "debug");
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if (!lua_istable(L, -1)) {
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lua_pop(L, 1);
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return 1;
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}
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lua_getfield(L, -1, "traceback");
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if (!lua_isfunction(L, -1)) {
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lua_pop(L, 2);
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return 1;
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}
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lua_pushvalue(L, 1);
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lua_pushinteger(L, 2);
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lua_call(L, 2, 1);
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return 1;
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}
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bool script_load(lua_State *L, const char *path)
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{
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verbosestream<<"Loading and running script from "<<path<<std::endl;
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lua_pushcfunction(L, luaErrorHandler);
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int errorhandler = lua_gettop(L);
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int ret = luaL_loadfile(L, path) || lua_pcall(L, 0, 0, errorhandler);
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if(ret){
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errorstream<<"========== ERROR FROM LUA ==========="<<std::endl;
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errorstream<<"Failed to load and run script from "<<std::endl;
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errorstream<<path<<":"<<std::endl;
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errorstream<<std::endl;
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errorstream<<lua_tostring(L, -1)<<std::endl;
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errorstream<<std::endl;
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errorstream<<"=======END OF ERROR FROM LUA ========"<<std::endl;
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lua_pop(L, 1); // Pop error message from stack
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lua_pop(L, 1); // Pop the error handler from stack
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return false;
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}
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lua_pop(L, 1); // Pop the error handler from stack
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return true;
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}
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lua_State* script_init()
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{
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lua_State *L = luaL_newstate();
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luaL_openlibs(L);
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return L;
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}
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void script_deinit(lua_State *L)
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{
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lua_close(L);
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}
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